QGraphicsItemGroup bounding rect problem

[jonks]

If you drag a QGraphicsItem across a scene and then query it's bounding rect you will see that it's x,y co-ordinates are updated each time it is dragged.

Do the same with a QGraphicsItemGroup, and it's bounding rect x,y co-ordinate is not updated.

It appears to me that to update a QGraphicsItemGroup bounding rect you have to destroy the group then re-create it.

The problem I'm having right now is, when using the command pattern for undo/redo dragging QGraphicsItemGroup items, it does not work because the bounding rect is never accurate.

Is this a Qt bug, or am I misunderstanding the co-ordinate system when using QGraphicsItemGroups?

[wysota]

If you drag a QGraphicsItem across a scene and then query it's bounding rect you will see that it's x,y co-ordinates are updated each time it is dragged.

No, they are not.

[jonks]

Thank you - you identified the mistake in my thoughts and now I know why my groups bounds are never updated.